TS 22.179(SA1)
Mission Critical Push to Talk (MCPTT) – Stage 1

The present document provides the service requirements for operation of the MCPTT Service. MCPTT makes use of
capabilities included in Group Communications System Enablers for LTE (GCSE_LTE) and Proximity Services
(ProSe), with additional requirements specific to the MCPTT Service. The MCPTT Service can be used for public
safety applications and also for general commercial applications (e.g., utility companies and railways).

2017-12-changes

for V15, V16:
(F) Removing 'over LTE' from the title of the specification
| (F) Updates to the wording in the specification to clarify that the requirements are applicable from LTE onwards
for V16:
(B) Addition of requirement on interworking with SCP in GSM-R